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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제14권 제4호
- 발행연도
- 1991.1
- 수록면
- 336 - 341 (6page)
이용수
초록· 키워드
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The effect of bovine serum albumin (BSA) on the encapsulation efficiency and stability of liposomes containing methotrexate (MTX) having different surface charges and cholesterol contents were investigated. The encapsulation efficiency of MTX was lower and the release of MTX was faster by the addition of BSA. The leaking of MTX from lipid bilayer depends upon the BSA concentrations. These results may be derived from the interaction of BSA with lipid bilayers. The dynamic structural changes of BSA were monitored indirectly using circular dichroism spectra. Observed dynamic structural changes of BSA with liposomes are presumed to reflect the interaction of BSA with liposomes. Negatively charged liposomes have more strong interaction with BSA than neutral and positively charged liposomes. BSA attacks lipid bilayers whether it is at the inner or at the outer phase of lipid bilayer and induces leakage of entrapped MTX. Especially, negatively charged liposomes are more sensitive than others. The inclusion of cholesterol in the lipid layers inhibits the interaction of BSA with liposomes and shows protective effect against BSA-induced leakage of MTX. To endure the attacking of BSA liposomes as drug carriers should be made using cholesterol.
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